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The United States Army is the main component of the United States Armed Forces and is its principal land force. It is the oldest branch of the U.S. military dating back to the American Revolutionary War as well as the largest The army´s primary mission has been defined as preserving the peace and security of the United States, overcoming any nations whose aggressive acts endanger it, as well as supporting and implementing national policies and objectives. Thus it is not used solely as a military force, but is also called upon to provide humanitarian assistance, disaster relief, peacekeeping and enforcement and other non-combat missions. Learn more about one of the world´s most powerful military organizations in this book.

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